The .30 update changed something with load times.
Since SU10, my load times, with or without add-ons, was under 2 minutes, from over 4 mins with SU9 and prior. It had essentially cut initial load times in half.
When the 11.29.30 version dropped to the beta testers last week, the first thing I noticed was that load times regressed to 4+ minutes again. Basically doubling for me. And it’s remained that way.
So in other words, they broke something in this update.